/* Copyright (C) 2022 Alif Semiconductor - All Rights Reserved. * Use, distribution and modification of this code is permitted under the * terms stated in the Alif Semiconductor Software License Agreement * * You should have received a copy of the Alif Semiconductor Software * License Agreement with this file. If not, please write to: * contact@alifsemi.com, or visit: https://alifsemi.com/license * */ /**************************************************************************//** * @file CRC_baremetal.c * @author Nisarga A M * @email nisarga.am@alifsemi.com * @version V1.0.0 * @date 7-July-2023 * @brief Baremetal demo application code for CRC driver -> Callback is not mandatory for CRC. It would be beneficial if DMA is enabled and the length of the data items are more than 1000 bytes. ******************************************************************************/ /* System Includes */ #include #include /* Project Includes */ /* include for CRC Driver */ #include "Driver_CRC.h" #include "RTE_Components.h" #if defined(RTE_Compiler_IO_STDOUT) #include "retarget_stdout.h" #endif /* RTE_Compiler_IO_STDOUT */ #define ENABLE 1 #define DISABLE 0 /* Select the CRC algorithm */ #define CRC_8_BIT 1 #define CRC_16_BIT 0 #define CRC_32_BIT 0 #define CRC_CUSTOM_32_BIT 0 /* Select the type of input */ #define INPUT_HEX_VALUE 1 #define INPUT_STRING_VALUE 0 #define CRC_CALLBACK_EVENT_SUCCESS 1 static volatile int32_t call_back_event = 0; /* CRC driver instance */ extern ARM_DRIVER_CRC Driver_CRC0; static ARM_DRIVER_CRC *CRCdrv = &Driver_CRC0; static void crc_demo(void); #if INPUT_HEX_VALUE static uint8_t input_value[] = {0x67, 0x3F, 0x90, 0xC9, 0x25, 0xF0, 0x4A, 0xB1, 0x12}; #endif #if INPUT_STRING_VALUE uint8_t input_value[] = {"Hello"}; #endif #if CRC_8_BIT static uint32_t seed_value_8_bit = (0x00000000); /* Seed value for 8 bit */ #elif CRC_16_BIT static uint32_t seed_value_16_bit = (0x00000000); /* Seed value for 16 bit */ #elif CRC_32_BIT static uint32_t seed_value_32_bit = (0xFFFFFFFF); /* Seed value for 32 bit */ #elif CRC_CUSTOM_32_BIT static uint32_t seed_value_32C_bit = (0xFFFFFFFF); /* Seed value for 32 bit custom polynomial */ static uint32_t polynomial = 0x2CEEA6C8; /* polynomial value for 32 bit custom polynomial */ #endif /* * @func : void crc_compute_callback(uint32_t event) * @brief : CRC compute callback event *.@return : NONE */ static void crc_compute_callback(uint32_t event) { if(event & ARM_CRC_COMPUTE_EVENT_DONE) { call_back_event = CRC_CALLBACK_EVENT_SUCCESS; } } /** * @fn :void crc_demo(void) * @brief :CRC demo : - This initialize the CRC. - For 8 bit, 16 bit and 32 bit,the seed value will be added into the Seed register. - If user provides 8 bit or 16 bit or 32 bit or 32 bit custom polynomial input , according to that 8 bit or 16 bit or 32 bit output will be printed. - For 8 bit and 16 bit CRC the input will be added to DATA_IN_8 register and for 32 bit CRC the input will be added to the DATA_IN_32 register. * @return : none */ static void crc_demo(void) { int32_t ret = 0; uint8_t len; uint32_t crc_output; ARM_DRIVER_VERSION version; printf("\r\n >>> CRC demo starting up!!! <<< \r\n"); version = CRCdrv->GetVersion(); printf("\r\n CRC version api:%X driver:%X...\r\n", version.api, version.drv); /* Initialize CRC driver */ ret = CRCdrv->Initialize(crc_compute_callback); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC init failed\n"); return; } /* Enable the power for CRC */ ret = CRCdrv->PowerControl(ARM_POWER_FULL); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Power up failed\n"); goto error_uninitialize; } #if INPUT_HEX_VALUE len = sizeof(input_value) / sizeof(input_value[0]); #endif #if INPUT_STRING_VALUE len = strlen((char *)input_value); #endif /* For 8 bit */ #if CRC_8_BIT /* To disable the Reflect, Invert, Bit, Byte, Custom polynomial bit of CRC */ ret = CRCdrv->Control(ARM_CRC_CONTROL_MASK, DISABLE); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control mask for 8 bit data failed\n"); goto error_poweroff; } /* To select the 8_BIT_CCITT */ ret= CRCdrv->Control(ARM_CRC_ALGORITHM_SEL, ARM_CRC_ALGORITHM_SEL_8_BIT_CCITT); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control Algorithm for 8 bit data failed\n"); goto error_poweroff; } /* Adding 8 bit seed value to the seed register */ ret = CRCdrv->Seed(seed_value_8_bit); if(ret != ARM_DRIVER_OK){ printf("\r\n Error:CRC Seed value for 8 bit failed\n"); goto error_uninitialize; } /*sending User input */ ret = CRCdrv->Compute(input_value, len, &crc_output); printf("8 bit output : %x\n", crc_output); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC 8 bit data sending failed\n"); goto error_send; } /* For 16 bit CRC*/ #elif CRC_16_BIT /* To disable the Reflect, Invert, Bit, Byte, Custom polynomial bit of CRC */ ret = CRCdrv->Control(ARM_CRC_CONTROL_MASK, DISABLE); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control mask for 16 bit data failed\n"); goto error_poweroff; } /* To select the 16_BIT_CCITT */ ret= CRCdrv->Control(ARM_CRC_ALGORITHM_SEL, ARM_CRC_ALGORITHM_SEL_16_BIT_CCITT); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control Algorithm for 16 bit data failed\n"); goto error_poweroff; } /* Adding 16 bit seed value to the seed register */ ret = CRCdrv->Seed(seed_value_16_bit); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Seed value for 16 bit data failed\n"); goto error_uninitialize; } /*sending user input */ ret = CRCdrv->Compute (input_value, len, &crc_output); printf("16 bit output : %x\n", crc_output); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC 16 bit data sending failed\n"); goto error_send; } /* For 32 bit CRC */ #elif CRC_32_BIT /* To Enable the Reflect, Invert, Bit swap and Byte swap of CRC control register */ ret = CRCdrv->Control(ARM_CRC_ENABLE_BIT_SWAP | ARM_CRC_ENABLE_BYTE_SWAP | ARM_CRC_ENABLE_INVERT_OUTPUT | ARM_CRC_ENABLE_REFLECT_OUTPUT, ENABLE); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control for 32 bit failed\n"); goto error_poweroff; } /* To select the 32_BIT CRC algorithm */ ret= CRCdrv->Control(ARM_CRC_ALGORITHM_SEL, ARM_CRC_ALGORITHM_SEL_32_BIT); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control Algorithm for 32 bit data failed\n"); goto error_poweroff; } /* Adding 32 bit seed value to the seed register */ ret = CRCdrv->Seed(seed_value_32_bit); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Seed value for 32 bit failed\n"); goto error_uninitialize; } /*sending user input */ ret = CRCdrv->Compute(input_value, len, &crc_output); printf("32 bit output : %x\n", crc_output); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC 32 bit data sending failed\n"); goto error_send; } /* For 32 bit Custom polynomial */ #elif CRC_CUSTOM_32_BIT /* Adding polynomial value */ ret = CRCdrv->PolyCustom(polynomial); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC PolyCustom value failed\n"); goto error_uninitialize; } /* To enable the CRC custom polynomial */ ret = CRCdrv->Control(ARM_CRC_ENABLE_CUSTOM_POLY, ENABLE); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control custom polynomial value failed\n"); goto error_poweroff; } /* To select the 32_BIT_CUSTOM_POLY crc algorithm */ ret= CRCdrv->Control(ARM_CRC_ALGORITHM_SEL, ARM_CRC_ALGORITHM_SEL_32_BIT_CUSTOM_POLY); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control Algorithm for 32 bit data custom polynomial failed\n"); goto error_poweroff; } /* To enable the Invert, Bit swap, Byte swap of CRC control register */ ret = CRCdrv->Control(ARM_CRC_ENABLE_BYTE_SWAP | ARM_CRC_ENABLE_BIT_SWAP | ARM_CRC_ENABLE_INVERT_OUTPUT, ENABLE); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Control for 32 bit custom polynomial failed\n"); goto error_poweroff; } /* Adding 32 bit poly custom seed value to the seed register */ ret = CRCdrv->Seed(seed_value_32C_bit); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Seed value for 32 bit data custom polynomial failed\n"); goto error_uninitialize; } /*sending user input */ ret = CRCdrv->Compute (input_value, len, &crc_output); printf("32 bit CUSTOM POLY output value: %x\n", crc_output); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC 32 bit custom polynomial data sending failed\n"); goto error_send; } #endif /* wait for the call back event */ while(call_back_event == 0); call_back_event = 0; printf("\n >>> CRC Compute done \n"); error_send: error_poweroff: /* Power off CRC peripheral */ ret = CRCdrv->PowerControl(ARM_POWER_OFF); if(ret != ARM_DRIVER_OK) { printf("\r\n Error: CRC Power OFF failed.\r\n"); } error_uninitialize: /* UnInitialize CRC driver */ ret = CRCdrv->Uninitialize(); if(ret != ARM_DRIVER_OK){ printf("\r\n Error: CRC Uninitialize failed.\r\n"); } } /* Define main entry point */ int main() { #if defined(RTE_Compiler_IO_STDOUT_User) int32_t ret; ret = stdout_init(); if(ret != ARM_DRIVER_OK) { while(1) { } } #endif crc_demo(); return 0; }